<template>
  <div>
    <h3></h3>
    <hr>
    <textarea placeholder="请输入" maxlength="120" v-model="msg"></textarea>  
    <mt-button type="primary" size="large" @click="postComment">发表评论</mt-button>
    <div class="cmt-list">
      <div class="cmt-item" v-for="(item,i) in comments" :key="item.add_time">
        <div class="cmt-title">
          第{{i+1}}楼&nbsp;&nbsp;用户：{{item.user_name}}&nbsp;&nbsp;发表时间：{{item.add_time|dataFormat}}
        </div>
        <div class="cmt-body">
          {{item.content==='undefined' ? '此用户很懒' : item.content}}
        </div>
      </div>
    </div>
    <mt-button type="danger" size="large" plain @click="getMore">加载更多</mt-button>
  </div>

</template>

<script>
import {Toast} from "mint-ui"

export default {
  data(){
    return {
      pageIndex:1,
      comments:[],
      msg:""
    }
  },
  created(){
    this.getComments()
  },
  methods:{
    getComments(){
      this.$http
        .get("api/getcomments/"+this.id+"?pageindex="+this.pageIndex)
        .then(result=>{
          if(result.body.status===0){
            this.comments=this.comments.concat(result.body)
          }else{
            Toast("failed")
          }
        })
    
    },
    getMore(){
      this.pageIndex++;
      this.getComments();
    },
    postComment(){
      if(this.msg.trim().length===0){
        return Toast("cann't be empty");
      }
      this.$http
        .post("api/postcomment/"+this.$route.params.id,{
          content:this.msg.trim()
        })
        .then(function(result){
          if(result.body.status===0){
            var cmt={
              user_name:"unknown user",
              add_time:Date.now(),
              content:this.msg.trim()
            };
            this.comments.unshift(cmt);
            this.msg="";
          }

        });
    }
  },
  props:["id"]
};
</script>

<style lang="scss" scoped>
.cmt-container{
  h3{
    font-size: 18px;
  }
  textarea{
    font-size:14px;
    height: 85px;
    margin: 0;
  }
  .cmt-list{
    margin:5px 0;
    .cmt-item{
      font-size:13px;
      .cmt-title{
        line-height: 30px;
        background-color: #ccc;
      }
      .cmt-body{
        line-height: 35px;
        text-indent: 2em;
        color: hotpink;
      }
    }
  }
}
</style>